public Square ()
{
// initialize vertex byte buffer for shape coordinates
ByteBuffer bb = ByteBuffer.AllocateDirect (
// (# of coordinate values * 4 bytes per float)
squareCoords.Length * 4);
bb.Order (ByteOrder.NativeOrder ());
vertexBuffer = bb.AsFloatBuffer ();
vertexBuffer.Put (squareCoords);
vertexBuffer.Position (0);
// initialize byte buffer for the draw list
ByteBuffer dlb = ByteBuffer.AllocateDirect (
// (# of coordinate values * 2 bytes per short)
drawOrder.Length * 2);
dlb.Order (ByteOrder.NativeOrder ());
drawListBuffer = dlb.AsShortBuffer ();
drawListBuffer.Put (drawOrder);
drawListBuffer.Position (0);
// prepare shaders and OpenGL program
int vertexShader = MyGLRenderer.LoadShader (GLES20.GlVertexShader,
vertexShaderCode);
int fragmentShader = MyGLRenderer.LoadShader (GLES20.GlFragmentShader,
fragmentShaderCode);
mProgram = GLES20.GlCreateProgram (); // create empty OpenGL Program
GLES20.GlAttachShader (mProgram, vertexShader); // add the vertex shader to program
GLES20.GlAttachShader (mProgram, fragmentShader); // add the fragment shader to program
GLES20.GlLinkProgram (mProgram); // create OpenGL program executables
}
public Triangle ()
{
// initialize vertex byte buffer for shape coordinates
ByteBuffer bb = ByteBuffer.AllocateDirect (
// (number of coordinate values * 4 bytes per float)
triangleCoords.Length * 4);
// use the device hardware's native byte order
bb.Order (ByteOrder.NativeOrder ());
// create a floating point buffer from the ByteBuffer
vertexBuffer = bb.AsFloatBuffer ();
// add the coordinates to the FloatBuffer
vertexBuffer.Put (triangleCoords);
// set the buffer to read the first coordinate
vertexBuffer.Position (0);
// prepare shaders and OpenGL program
int vertexShader = MyGLRenderer.LoadShader (GLES30.GlVertexShader,
vertexShaderCode);
int fragmentShader = MyGLRenderer.LoadShader (GLES30.GlFragmentShader,
fragmentShaderCode);
mProgram = GLES30.GlCreateProgram (); // create empty OpenGL Program
GLES30.GlAttachShader (mProgram, vertexShader); // add the vertex shader to program
GLES30.GlAttachShader (mProgram, fragmentShader); // add the fragment shader to program
GLES30.GlLinkProgram (mProgram); // create OpenGL program executables
}
public MainRenderer(MainView view)
{
mView = view;
float[] vtmp = { 1.0f, -1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f };
float[] ttmp = { 1.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 0.0f };
pVertex = ByteBuffer.AllocateDirect(8 * 4).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
pVertex.Put(vtmp);
pVertex.Position(0);
pTexCoord = ByteBuffer.AllocateDirect(8 * 4).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
pTexCoord.Put(ttmp);
pTexCoord.Position(0);
}
public Cube()
{
ByteBuffer byteBuf = ByteBuffer.AllocateDirect(vertices.Length * 4);
byteBuf.Order(ByteOrder.NativeOrder());
mVertexBuffer = byteBuf.AsFloatBuffer();
mVertexBuffer.Put(vertices);
mVertexBuffer.Position(0);
byteBuf = ByteBuffer.AllocateDirect(colors.Length * 4);
byteBuf.Order(ByteOrder.NativeOrder());
mColorBuffer = byteBuf.AsFloatBuffer();
mColorBuffer.Put(colors);
mColorBuffer.Position(0);
mIndexBuffer = ByteBuffer.AllocateDirect(indices.Length);
mIndexBuffer.Put(indices);
mIndexBuffer.Position(0);
}
private void InitBuffers()
{
// Initialize the size of the vertex buffer.
ByteBuffer byteBufferForVer = ByteBuffer.AllocateDirect(32);
byteBufferForVer.Order(ByteOrder.NativeOrder());
mVerBuffer = byteBufferForVer.AsFloatBuffer();
mVerBuffer.Put(POS);
mVerBuffer.Position(0);
// Initialize the size of the texture buffer.
ByteBuffer byteBufferForTex = ByteBuffer.AllocateDirect(32);
byteBufferForTex.Order(ByteOrder.NativeOrder());
mTexBuffer = byteBufferForTex.AsFloatBuffer();
mTexBuffer.Put(COORD);
mTexBuffer.Position(0);
// Initialize the size of the transformed texture buffer.
ByteBuffer byteBufferForTransformedTex = ByteBuffer.AllocateDirect(32);
byteBufferForTransformedTex.Order(ByteOrder.NativeOrder());
mTexTransformedBuffer = byteBufferForTransformedTex.AsFloatBuffer();
}
public void Init()
{
// Create program
_program = GLToolbox.CreateProgram (VertexShader, FragmentShader);
// Bind attributes and uniforms
_texSamplerHandle = GLES20.GlGetUniformLocation (_program,
"tex_sampler");
_texCoordHandle = GLES20.GlGetAttribLocation (_program, "a_texcoord");
_posCoordHandle = GLES20.GlGetAttribLocation (_program, "a_position");
// Setup coordinate buffers
_texVertices = ByteBuffer.AllocateDirect (
TexVertices.Length * FloatSizeBytes)
.Order (ByteOrder.NativeOrder ()).AsFloatBuffer ();
_texVertices.Put (TexVertices).Position (0);
_posVertices = ByteBuffer.AllocateDirect (
PosVertices.Length * FloatSizeBytes)
.Order (ByteOrder.NativeOrder ()).AsFloatBuffer ();
_posVertices.Put (PosVertices).Position (0);
}
private int[] VBOBuffers = new int[2]; //2 buffers for vertices and colors
public void OnSurfaceCreated(IGL10 gl, Javax.Microedition.Khronos.Egl.EGLConfig config)
{
const float edge = 1.0f;
// X, Y, Z,
float[] triangleVerticesData =
{
-1.5f, -0.25f, 0.0f,
0.5f, -0.25f, 0.0f,
0.0f, 0.559016994f, 0.0f
};
FloatBuffer mTriangleVertices = ByteBuffer.AllocateDirect(triangleVerticesData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleVertices.Put(triangleVerticesData).Flip();
// R, G, B, A
float[] triangleColorsData =
{
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f
};
FloatBuffer mTriangleColors = ByteBuffer.AllocateDirect(triangleColorsData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleColors.Put(triangleColorsData).Flip();
//Use VBO
GLES20.GlGenBuffers(2, VBOBuffers, 0); //2 buffers for vertices and colors
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[0]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleVertices.Capacity() * mBytesPerFloat, mTriangleVertices, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[1]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleColors.Capacity() * mBytesPerFloat, mTriangleColors, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
GLES20.GlClearColor(1.0f, 1.0f, 1.0f, 1.0f);
// Position the eye behind the origin.
float eyeX = 0.0f;
float eyeY = 0.0f;
float eyeZ = 4.5f;
// We are looking toward the distance
float lookX = 0.0f;
float lookY = 0.0f;
float lookZ = -5.0f;
// Set our up vector. This is where our head would be pointing were we holding the camera.
float upX = 0.0f;
float upY = 1.0f;
float upZ = 0.0f;
// Set the view matrix. This matrix can be said to represent the camera position.
// NOTE: In OpenGL 1, a ModelView matrix is used, which is a combination of a model and
// view matrix. In OpenGL 2, we can keep track of these matrices separately if we choose.
Matrix.SetLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);
string vertexShader =
"uniform mat4 u_MVPMatrix; \n" // A constant representing the combined model/view/projection matrix.
+ "attribute vec4 a_Position; \n" // Per-vertex position information we will pass in.
+ "attribute vec4 a_Color; \n" // Per-vertex color information we will pass in.
+ "varying vec4 v_Color; \n" // This will be passed into the fragment shader.
+ "void main() \n" // The entry point for our vertex shader.
+ "{ \n"
+ " v_Color = a_Color; \n" // Pass the color through to the fragment shader. It will be interpolated across the triangle.
+ " gl_Position = u_MVPMatrix \n" // gl_Position is a special variable used to store the final position.
+ " * a_Position; \n" // Multiply the vertex by the matrix to get the final point in normalized screen coordinates.
+ "} \n";
string fragmentShader =
"precision mediump float; \n" // Set the default precision to medium. We don't need as high of a
// precision in the fragment shader.
+ "varying vec4 v_Color; \n" // This is the color from the vertex shader interpolated across the triangle per fragment.
+ "void main() \n" // The entry point for our fragment shader.
+ "{ \n"
+ " gl_FragColor = v_Color; \n" // Pass the color directly through the pipeline.
+ "} \n";
int vertexShaderHandle = GLES20.GlCreateShader(GLES20.GlVertexShader);
if (vertexShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(vertexShaderHandle, vertexShader);
// Compile the shader.
GLES20.GlCompileShader(vertexShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(vertexShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(vertexShaderHandle);
vertexShaderHandle = 0;
}
}
if (vertexShaderHandle == 0)
{
throw new Exception("Error creating vertex shader.");
}
// Load in the fragment shader shader.
int fragmentShaderHandle = GLES20.GlCreateShader(GLES20.GlFragmentShader);
if (fragmentShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(fragmentShaderHandle, fragmentShader);
// Compile the shader.
GLES20.GlCompileShader(fragmentShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(fragmentShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(fragmentShaderHandle);
fragmentShaderHandle = 0;
}
}
if (fragmentShaderHandle == 0)
{
throw new Exception("Error creating fragment shader.");
}
// Create a program object and store the handle to it.
int programHandle = GLES20.GlCreateProgram();
if (programHandle != 0)
{
// Bind the vertex shader to the program.
GLES20.GlAttachShader(programHandle, vertexShaderHandle);
// Bind the fragment shader to the program.
GLES20.GlAttachShader(programHandle, fragmentShaderHandle);
// Bind attributes
GLES20.GlBindAttribLocation(programHandle, 0, "a_Position");
GLES20.GlBindAttribLocation(programHandle, 1, "a_Color");
// Link the two shaders together into a program.
GLES20.GlLinkProgram(programHandle);
// Get the link status.
int[] linkStatus = new int[1];
GLES20.GlGetProgramiv(programHandle, GLES20.GlLinkStatus, linkStatus, 0);
// If the link failed, delete the program.
if (linkStatus[0] == 0)
{
GLES20.GlDeleteProgram(programHandle);
programHandle = 0;
}
}
if (programHandle == 0)
{
throw new Exception("Error creating program.");
}
// Set program handles. These will later be used to pass in values to the program.
mMVPMatrixHandle = GLES20.GlGetUniformLocation(programHandle, "u_MVPMatrix");
mPositionHandle = GLES20.GlGetAttribLocation(programHandle, "a_Position");
mColorHandle = GLES20.GlGetAttribLocation(programHandle, "a_Color");
// Tell OpenGL to use this program when rendering.
GLES20.GlUseProgram(programHandle);
}
/**
* Updates the plane model transform matrix and extents.
*/
private void updatePlaneParameters(float[] planeMatrix, float extentX, float extentZ,
FloatBuffer boundary)
{
Array.Copy(planeMatrix, 0, mModelMatrix, 0, 16);
if (boundary == null)
{
mVertexBuffer.Limit(0);
mIndexBuffer.Limit(0);
return;
}
// Generate a new set of vertices and a corresponding triangle strip index set so that
// the plane boundary polygon has a fading edge. This is done by making a copy of the
// boundary polygon vertices and scaling it down around center to push it inwards. Then
// the index buffer is setup accordingly.
boundary.Rewind();
int boundaryVertices = boundary.Limit() / 2;
int numVertices;
int numIndices;
numVertices = boundaryVertices * VERTS_PER_BOUNDARY_VERT;
// drawn as GL_TRIANGLE_STRIP with 3n-2 triangles (n-2 for fill, 2n for perimeter).
numIndices = boundaryVertices * INDICES_PER_BOUNDARY_VERT;
if (mVertexBuffer.Capacity() < numVertices * COORDS_PER_VERTEX)
{
int size = mVertexBuffer.Capacity();
while (size < numVertices * COORDS_PER_VERTEX)
{
size *= 2;
}
mVertexBuffer = ByteBuffer.AllocateDirect(BYTES_PER_FLOAT * size)
.Order(ByteOrder.NativeOrder()).AsFloatBuffer();
}
mVertexBuffer.Rewind();
mVertexBuffer.Limit(numVertices * COORDS_PER_VERTEX);
if (mIndexBuffer.Capacity() < numIndices)
{
int size = mIndexBuffer.Capacity();
while (size < numIndices)
{
size *= 2;
}
mIndexBuffer = ByteBuffer.AllocateDirect(BYTES_PER_SHORT * size)
.Order(ByteOrder.NativeOrder()).AsShortBuffer();
}
mIndexBuffer.Rewind();
mIndexBuffer.Limit(numIndices);
// Note: when either dimension of the bounding box is smaller than 2*FADE_RADIUS_M we
// generate a bunch of 0-area triangles. These don't get rendered though so it works
// out ok.
float xScale = Math.Max((extentX - 2 * FADE_RADIUS_M) / extentX, 0.0f);
float zScale = Math.Max((extentZ - 2 * FADE_RADIUS_M) / extentZ, 0.0f);
while (boundary.HasRemaining)
{
float x = boundary.Get();
float z = boundary.Get();
mVertexBuffer.Put(x);
mVertexBuffer.Put(z);
mVertexBuffer.Put(0.0f);
mVertexBuffer.Put(x * xScale);
mVertexBuffer.Put(z * zScale);
mVertexBuffer.Put(1.0f);
}
// step 1, perimeter
mIndexBuffer.Put((short)((boundaryVertices - 1) * 2));
for (int i = 0; i < boundaryVertices; ++i)
{
mIndexBuffer.Put((short)(i * 2));
mIndexBuffer.Put((short)(i * 2 + 1));
}
mIndexBuffer.Put((short)1);
// This leaves us on the interior edge of the perimeter between the inset vertices
// for boundary verts n-1 and 0.
// step 2, interior:
for (int i = 1; i < boundaryVertices / 2; ++i)
{
mIndexBuffer.Put((short)((boundaryVertices - 1 - i) * 2 + 1));
mIndexBuffer.Put((short)(i * 2 + 1));
}
if (boundaryVertices % 2 != 0)
{
mIndexBuffer.Put((short)((boundaryVertices / 2) * 2 + 1));
}
}
/**
* Creates the buffers we use to store information about the 3D world.
*
* OpenGL doesn't use Java arrays, but rather needs data in a format it can understand.
* Hence we use ByteBuffers.
*/
public void OnSurfaceCreated(Javax.Microedition.Khronos.Egl.EGLConfig config)
{
Android.Util.Log.Info(TAG, "onSurfaceCreated");
GLES20.GlClearColor(0.1f, 0.1f, 0.1f, 0.5f); // Dark background so text shows up well.
var bbVertices = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_COORDS.Length * 4);
bbVertices.Order(ByteOrder.NativeOrder());
cubeVertices = bbVertices.AsFloatBuffer();
cubeVertices.Put(WorldLayoutData.CUBE_COORDS);
cubeVertices.Position(0);
var bbColors = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_COLORS.Length * 4);
bbColors.Order(ByteOrder.NativeOrder());
cubeColors = bbColors.AsFloatBuffer();
cubeColors.Put(WorldLayoutData.CUBE_COLORS);
cubeColors.Position(0);
var bbFoundColors = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_FOUND_COLORS.Length * 4);
bbFoundColors.Order(ByteOrder.NativeOrder());
cubeFoundColors = bbFoundColors.AsFloatBuffer();
cubeFoundColors.Put(WorldLayoutData.CUBE_FOUND_COLORS);
cubeFoundColors.Position(0);
var bbNormals = ByteBuffer.AllocateDirect(WorldLayoutData.CUBE_NORMALS.Length * 4);
bbNormals.Order(ByteOrder.NativeOrder());
cubeNormals = bbNormals.AsFloatBuffer();
cubeNormals.Put(WorldLayoutData.CUBE_NORMALS);
cubeNormals.Position(0);
// make a floor
var bbFloorVertices = ByteBuffer.AllocateDirect(WorldLayoutData.FLOOR_COORDS.Length * 4);
bbFloorVertices.Order(ByteOrder.NativeOrder());
floorVertices = bbFloorVertices.AsFloatBuffer();
floorVertices.Put(WorldLayoutData.FLOOR_COORDS);
floorVertices.Position(0);
var bbFloorNormals = ByteBuffer.AllocateDirect(WorldLayoutData.FLOOR_NORMALS.Length * 4);
bbFloorNormals.Order(ByteOrder.NativeOrder());
floorNormals = bbFloorNormals.AsFloatBuffer();
floorNormals.Put(WorldLayoutData.FLOOR_NORMALS);
floorNormals.Position(0);
var bbFloorColors = ByteBuffer.AllocateDirect(WorldLayoutData.FLOOR_COLORS.Length * 4);
bbFloorColors.Order(ByteOrder.NativeOrder());
floorColors = bbFloorColors.AsFloatBuffer();
floorColors.Put(WorldLayoutData.FLOOR_COLORS);
floorColors.Position(0);
int vertexShader = loadGLShader(GLES20.GlVertexShader, Resource.Raw.light_vertex);
int gridShader = loadGLShader(GLES20.GlFragmentShader, Resource.Raw.grid_fragment);
int passthroughShader = loadGLShader(GLES20.GlFragmentShader, Resource.Raw.passthrough_fragment);
cubeProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(cubeProgram, vertexShader);
GLES20.GlAttachShader(cubeProgram, passthroughShader);
GLES20.GlLinkProgram(cubeProgram);
GLES20.GlUseProgram(cubeProgram);
CheckGLError("Cube program");
cubePositionParam = GLES20.GlGetAttribLocation(cubeProgram, "a_Position");
cubeNormalParam = GLES20.GlGetAttribLocation(cubeProgram, "a_Normal");
cubeColorParam = GLES20.GlGetAttribLocation(cubeProgram, "a_Color");
cubeModelParam = GLES20.GlGetUniformLocation(cubeProgram, "u_Model");
cubeModelViewParam = GLES20.GlGetUniformLocation(cubeProgram, "u_MVMatrix");
cubeModelViewProjectionParam = GLES20.GlGetUniformLocation(cubeProgram, "u_MVP");
cubeLightPosParam = GLES20.GlGetUniformLocation(cubeProgram, "u_LightPos");
CheckGLError("Cube program params");
floorProgram = GLES20.GlCreateProgram();
GLES20.GlAttachShader(floorProgram, vertexShader);
GLES20.GlAttachShader(floorProgram, gridShader);
GLES20.GlLinkProgram(floorProgram);
GLES20.GlUseProgram(floorProgram);
CheckGLError("Floor program");
floorModelParam = GLES20.GlGetUniformLocation(floorProgram, "u_Model");
floorModelViewParam = GLES20.GlGetUniformLocation(floorProgram, "u_MVMatrix");
floorModelViewProjectionParam = GLES20.GlGetUniformLocation(floorProgram, "u_MVP");
floorLightPosParam = GLES20.GlGetUniformLocation(floorProgram, "u_LightPos");
floorPositionParam = GLES20.GlGetAttribLocation(floorProgram, "a_Position");
floorNormalParam = GLES20.GlGetAttribLocation(floorProgram, "a_Normal");
floorColorParam = GLES20.GlGetAttribLocation(floorProgram, "a_Color");
CheckGLError("Floor program params");
Matrix.SetIdentityM(modelFloor, 0);
Matrix.TranslateM(modelFloor, 0, 0, -floorDepth, 0); // Floor appears below user.
// Avoid any delays during start-up due to decoding of sound files.
System.Threading.Tasks.Task.Run(() => {
// Start spatial audio playback of SOUND_FILE at the model postion. The returned
//soundId handle is stored and allows for repositioning the sound object whenever
// the cube position changes.
gvrAudioEngine.PreloadSoundFile(SOUND_FILE);
soundId = gvrAudioEngine.CreateSoundObject(SOUND_FILE);
gvrAudioEngine.SetSoundObjectPosition(
soundId, modelPosition [0], modelPosition [1], modelPosition [2]);
gvrAudioEngine.PlaySound(soundId, true /* looped playback */);
});
UpdateModelPosition();
CheckGLError("onSurfaceCreated");
}
public void OnSurfaceCreated(IGL10 gl, Javax.Microedition.Khronos.Egl.EGLConfig config)
{
const float coord = 1.0f;
// Cube coords
// X, Y, Z = 1 vertex * 3 = 1 face * 12 = 1 cube
float[] triangleVerticesData =
{
-coord, -coord, -coord,
-coord, -coord, coord,
-coord, coord, coord,
coord, coord, -coord,
-coord, -coord, -coord,
-coord, coord, -coord,
coord, -coord, coord,
-coord, -coord, -coord,
coord, -coord, -coord,
coord, coord, -coord,
coord, -coord, -coord,
-coord, -coord, -coord,
-coord, -coord, -coord,
-coord, coord, coord,
-coord, coord, -coord,
coord, -coord, coord,
-coord, -coord, coord,
-coord, -coord, -coord,
-coord, coord, coord,
-coord, -coord, coord,
coord, -coord, coord,
coord, coord, coord,
coord, -coord, -coord,
coord, coord, -coord,
coord, -coord, -coord,
coord, coord, coord,
coord, -coord, coord,
coord, coord, coord,
coord, coord, -coord,
-coord, coord, -coord,
coord, coord, coord,
-coord, coord, -coord,
-coord, coord, coord,
coord, coord, coord,
-coord, coord, coord,
coord, -coord, coord
};
FloatBuffer mTriangleVertices = ByteBuffer.AllocateDirect(triangleVerticesData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleVertices.Put(triangleVerticesData).Flip();
// Cube colors
// R, G, B, A
float[] triangleColorsData =
{
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f
};
FloatBuffer mTriangleColors = ByteBuffer.AllocateDirect(triangleColorsData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleColors.Put(triangleColorsData).Flip();
//Cube texture UV Map
float[] triangleTextureUVMapData =
{
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 0.0f
};
FloatBuffer mTriangleTextureUVMap = ByteBuffer.AllocateDirect(triangleTextureUVMapData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleTextureUVMap.Put(triangleTextureUVMapData).Flip();
//triagles normals
//This normal array is not right, it is spacialy DO FOR demonstrate how normals work with faces when light is calculated at shader program
float[] triangleNormalData =
{
// Front face
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
// Right face
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
1.0f, 0.0f, 0.0f,
// Back face
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
0.0f, 0.0f, -1.0f,
// Left face
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
-1.0f, 0.0f, 0.0f,
// Top face
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 1.0f, 0.0f,
// Bottom face
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f,
0.0f, -1.0f, 0.0f
};
FloatBuffer mTriangleNormal = ByteBuffer.AllocateDirect(triangleNormalData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleNormal.Put(triangleNormalData).Flip();
//Data buffers to VBO
GLES20.GlGenBuffers(4, VBOBuffers, 0); //2 buffers for vertices, texture and colors
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[0]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleVertices.Capacity() * mBytesPerFloat, mTriangleVertices, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[1]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleColors.Capacity() * mBytesPerFloat, mTriangleColors, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[2]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleTextureUVMap.Capacity() * mBytesPerFloat, mTriangleTextureUVMap, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[3]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleNormal.Capacity() * mBytesPerFloat, mTriangleNormal, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
//Load and setup texture
GLES20.GlGenTextures(1, textureHandle, 0); //init 1 texture storage handle
if (textureHandle[0] != 0)
{
//Android.Graphics cose class Matrix exists at both Android.Graphics and Android.OpenGL and this is only sample of using
Android.Graphics.BitmapFactory.Options options = new Android.Graphics.BitmapFactory.Options();
options.InScaled = false; // No pre-scaling
Android.Graphics.Bitmap bitmap = Android.Graphics.BitmapFactory.DecodeResource(context.Resources, Resource.Drawable.texture1, options);
GLES20.GlBindTexture(GLES20.GlTexture2d, textureHandle[0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bitmap, 0);
bitmap.Recycle();
}
//Ask android to run RAM garbage cleaner
System.GC.Collect();
//Setup OpenGL ES
GLES20.GlClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// GLES20.GlEnable(GLES20.GlDepthTest); //uncoment if needs enabled dpeth test
GLES20.GlEnable(2884); // GlCullFace == 2884 see OpenGL documentation to this constant value
GLES20.GlCullFace(GLES20.GlBack);
// Position the eye behind the origin.
float eyeX = 0.0f;
float eyeY = 0.0f;
float eyeZ = 4.5f;
// We are looking toward the distance
float lookX = 0.0f;
float lookY = 0.0f;
float lookZ = -5.0f;
// Set our up vector. This is where our head would be pointing were we holding the camera.
float upX = 0.0f;
float upY = coord;
float upZ = 0.0f;
// Set the view matrix. This matrix can be said to represent the camera position.
// NOTE: In OpenGL 1, a ModelView matrix is used, which is a combination of a model and
// view matrix. In OpenGL 2, we can keep track of these matrices separately if we choose.
Matrix.SetLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);
//all "attribute" variables is "triagles" VBO (arrays) items representation
//a_Possition[0] <=> a_Color[0] <=> a_TextureCoord[0] <=> a_Normal[0]
//a_Possition[1] <=> a_Color[1] <=> a_TextureCoord[1] <=> a_Normal[1]
//...
//a_Possition[n] <=> a_Color[n] <=> a_TextureCoord[n] <=> a_Normal[n] -- where "n" is object buffers length
//-> HOW MANY faces in your object (model) in VBO -> how many times the vertex shader will be called by OpenGL
string vertexShader =
"uniform mat4 u_MVPMatrix; \n" // A constant representing the combined model/view/projection matrix.
+ "uniform vec3 u_LightPos; \n" // A constant representing the light source position
+ "attribute vec4 a_Position; \n" // Per-vertex position information we will pass in. (it means vec4[x,y,z,w] but we put only x,y,z at this sample
+ "attribute vec4 a_Color; \n" // Per-vertex color information we will pass in.
+ "varying vec4 v_Color; \n" // This will be passed into the fragment shader.
+ "attribute vec2 a_TextureCoord; \n" // Per-vertex texture UVMap information we will pass in.
+ "varying vec2 v_TextureCoord; \n" // This will be passed into the fragment shader.
+ "attribute vec3 a_Normal; \n" // Per-vertex normals information we will pass in.
+ "void main() \n" // The entry point for our vertex shader.
+ "{ \n"
//light calculation section for fragment shader
+ " vec3 modelViewVertex = vec3(u_MVPMatrix * a_Position);\n"
+ " vec3 modelViewNormal = vec3(u_MVPMatrix * vec4(a_Normal, 0.0));\n"
+ " float distance = length(u_LightPos - modelViewVertex);\n"
+ " vec3 lightVector = normalize(u_LightPos - modelViewVertex);\n"
+ " float diffuse = max(dot(modelViewNormal, lightVector), 0.1);\n"
+ " diffuse = diffuse * (1.0 / (1.0 + (0.25 * distance * distance)));\n"
+ " v_Color = a_Color * vec4(diffuse);\n" //Pass the color with light aspect to fragment shader
+ " v_TextureCoord = a_TextureCoord; \n" // Pass the texture coordinate through to the fragment shader. It will be interpolated across the triangle.
+ " gl_Position = u_MVPMatrix \n" // gl_Position is a special variable used to store the final position.
+ " * a_Position; \n" // Multiply the vertex by the matrix to get the final point in normalized screen coordinates.
+ "} \n";
string fragmentShader =
"precision mediump float; \n" // Set the default precision to medium. We don't need as high of a
// precision in the fragment shader.
+ "varying vec4 v_Color; \n" // This is the color from the vertex shader interpolated across the triangle per fragment.
+ "varying vec2 v_TextureCoord; \n" // This is the texture coordinate from the vertex shader interpolated across the triangle per fragment.
+ "uniform sampler2D u_Texture; \n" // This is the texture image handler
+ "void main() \n" // The entry point for our fragment shader.
+ "{ \n"
+ " gl_FragColor = texture2D(u_Texture, v_TextureCoord) * v_Color; \n" // Pass the color directly through the pipeline.
+ "} \n";
int vertexShaderHandle = GLES20.GlCreateShader(GLES20.GlVertexShader);
if (vertexShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(vertexShaderHandle, vertexShader);
// Compile the shader.
GLES20.GlCompileShader(vertexShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(vertexShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(vertexShaderHandle);
vertexShaderHandle = 0;
}
}
if (vertexShaderHandle == 0)
{
throw new Exception("Error creating vertex shader.");
}
// Load in the fragment shader shader.
int fragmentShaderHandle = GLES20.GlCreateShader(GLES20.GlFragmentShader);
if (fragmentShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(fragmentShaderHandle, fragmentShader);
// Compile the shader.
GLES20.GlCompileShader(fragmentShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(fragmentShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(fragmentShaderHandle);
fragmentShaderHandle = 0;
}
}
if (fragmentShaderHandle == 0)
{
throw new Exception("Error creating fragment shader.");
}
// Create a program object and store the handle to it.
int programHandle = GLES20.GlCreateProgram();
if (programHandle != 0)
{
// Bind the vertex shader to the program.
GLES20.GlAttachShader(programHandle, vertexShaderHandle);
// Bind the fragment shader to the program.
GLES20.GlAttachShader(programHandle, fragmentShaderHandle);
// Bind attributes
GLES20.GlBindAttribLocation(programHandle, 0, "a_Position");
GLES20.GlBindAttribLocation(programHandle, 1, "a_Color");
GLES20.GlBindAttribLocation(programHandle, 2, "a_TextureCoord");
GLES20.GlBindAttribLocation(programHandle, 3, "a_Normal");
// Link the two shaders together into a program.
GLES20.GlLinkProgram(programHandle);
// Get the link status.
int[] linkStatus = new int[1];
GLES20.GlGetProgramiv(programHandle, GLES20.GlLinkStatus, linkStatus, 0);
// If the link failed, delete the program.
if (linkStatus[0] == 0)
{
GLES20.GlDeleteProgram(programHandle);
programHandle = 0;
}
}
if (programHandle == 0)
{
throw new Exception("Error creating program.");
}
// Set program handles. These will later be used to pass in values to the program.
mMVPMatrixHandle = GLES20.GlGetUniformLocation(programHandle, "u_MVPMatrix");
mLightPos = GLES20.GlGetUniformLocation(programHandle, "u_LightPos");
mPositionHandle = GLES20.GlGetAttribLocation(programHandle, "a_Position");
mColorHandle = GLES20.GlGetAttribLocation(programHandle, "a_Color");
mTextureCoordHandle = GLES20.GlGetAttribLocation(programHandle, "a_TextureCoord");
mNormalHandle = GLES20.GlGetAttribLocation(programHandle, "a_Normal");
mTextureHandle = GLES20.GlGetUniformLocation(programHandle, "u_Texture");
// Tell OpenGL to use this program when rendering.
GLES20.GlUseProgram(programHandle);
}
/**
* Creates the buffers we use to store information about the 3D world.
*
* OpenGL doesn't use Java arrays, but rather needs data in a format it can understand.
* Hence we use ByteBuffers.
*/
public void OnSurfaceCreated (Javax.Microedition.Khronos.Egl.EGLConfig config)
{
Android.Util.Log.Info (TAG, "onSurfaceCreated");
GLES20.GlClearColor (0.1f, 0.1f, 0.1f, 0.5f); // Dark background so text shows up well.
var bbVertices = ByteBuffer.AllocateDirect (WorldLayoutData.CUBE_COORDS.Length * 4);
bbVertices.Order (ByteOrder.NativeOrder ());
cubeVertices = bbVertices.AsFloatBuffer ();
cubeVertices.Put (WorldLayoutData.CUBE_COORDS);
cubeVertices.Position (0);
var bbColors = ByteBuffer.AllocateDirect (WorldLayoutData.CUBE_COLORS.Length * 4);
bbColors.Order (ByteOrder.NativeOrder ());
cubeColors = bbColors.AsFloatBuffer ();
cubeColors.Put (WorldLayoutData.CUBE_COLORS);
cubeColors.Position (0);
var bbFoundColors = ByteBuffer.AllocateDirect (WorldLayoutData.CUBE_FOUND_COLORS.Length * 4);
bbFoundColors.Order (ByteOrder.NativeOrder ());
cubeFoundColors = bbFoundColors.AsFloatBuffer ();
cubeFoundColors.Put (WorldLayoutData.CUBE_FOUND_COLORS);
cubeFoundColors.Position (0);
var bbNormals = ByteBuffer.AllocateDirect (WorldLayoutData.CUBE_NORMALS.Length * 4);
bbNormals.Order (ByteOrder.NativeOrder ());
cubeNormals = bbNormals.AsFloatBuffer ();
cubeNormals.Put (WorldLayoutData.CUBE_NORMALS);
cubeNormals.Position (0);
// make a floor
var bbFloorVertices = ByteBuffer.AllocateDirect (WorldLayoutData.FLOOR_COORDS.Length * 4);
bbFloorVertices.Order (ByteOrder.NativeOrder ());
floorVertices = bbFloorVertices.AsFloatBuffer ();
floorVertices.Put (WorldLayoutData.FLOOR_COORDS);
floorVertices.Position (0);
var bbFloorNormals = ByteBuffer.AllocateDirect (WorldLayoutData.FLOOR_NORMALS.Length * 4);
bbFloorNormals.Order (ByteOrder.NativeOrder ());
floorNormals = bbFloorNormals.AsFloatBuffer ();
floorNormals.Put (WorldLayoutData.FLOOR_NORMALS);
floorNormals.Position (0);
var bbFloorColors = ByteBuffer.AllocateDirect (WorldLayoutData.FLOOR_COLORS.Length * 4);
bbFloorColors.Order (ByteOrder.NativeOrder ());
floorColors = bbFloorColors.AsFloatBuffer ();
floorColors.Put (WorldLayoutData.FLOOR_COLORS);
floorColors.Position (0);
int vertexShader = loadGLShader (GLES20.GlVertexShader, Resource.Raw.light_vertex);
int gridShader = loadGLShader (GLES20.GlFragmentShader, Resource.Raw.grid_fragment);
int passthroughShader = loadGLShader (GLES20.GlFragmentShader, Resource.Raw.passthrough_fragment);
cubeProgram = GLES20.GlCreateProgram ();
GLES20.GlAttachShader (cubeProgram, vertexShader);
GLES20.GlAttachShader (cubeProgram, passthroughShader);
GLES20.GlLinkProgram (cubeProgram);
GLES20.GlUseProgram (cubeProgram);
CheckGLError ("Cube program");
cubePositionParam = GLES20.GlGetAttribLocation (cubeProgram, "a_Position");
cubeNormalParam = GLES20.GlGetAttribLocation (cubeProgram, "a_Normal");
cubeColorParam = GLES20.GlGetAttribLocation (cubeProgram, "a_Color");
cubeModelParam = GLES20.GlGetUniformLocation (cubeProgram, "u_Model");
cubeModelViewParam = GLES20.GlGetUniformLocation (cubeProgram, "u_MVMatrix");
cubeModelViewProjectionParam = GLES20.GlGetUniformLocation (cubeProgram, "u_MVP");
cubeLightPosParam = GLES20.GlGetUniformLocation (cubeProgram, "u_LightPos");
CheckGLError ("Cube program params");
floorProgram = GLES20.GlCreateProgram ();
GLES20.GlAttachShader (floorProgram, vertexShader);
GLES20.GlAttachShader (floorProgram, gridShader);
GLES20.GlLinkProgram (floorProgram);
GLES20.GlUseProgram (floorProgram);
CheckGLError ("Floor program");
floorModelParam = GLES20.GlGetUniformLocation (floorProgram, "u_Model");
floorModelViewParam = GLES20.GlGetUniformLocation (floorProgram, "u_MVMatrix");
floorModelViewProjectionParam = GLES20.GlGetUniformLocation (floorProgram, "u_MVP");
floorLightPosParam = GLES20.GlGetUniformLocation (floorProgram, "u_LightPos");
floorPositionParam = GLES20.GlGetAttribLocation (floorProgram, "a_Position");
floorNormalParam = GLES20.GlGetAttribLocation (floorProgram, "a_Normal");
floorColorParam = GLES20.GlGetAttribLocation (floorProgram, "a_Color");
CheckGLError ("Floor program params");
Matrix.SetIdentityM (modelFloor, 0);
Matrix.TranslateM (modelFloor, 0, 0, -floorDepth, 0); // Floor appears below user.
// Avoid any delays during start-up due to decoding of sound files.
System.Threading.Tasks.Task.Run (() => {
// Start spatial audio playback of SOUND_FILE at the model postion. The returned
//soundId handle is stored and allows for repositioning the sound object whenever
// the cube position changes.
gvrAudioEngine.PreloadSoundFile (SOUND_FILE);
soundId = gvrAudioEngine.CreateSoundObject (SOUND_FILE);
gvrAudioEngine.SetSoundObjectPosition (
soundId, modelPosition [0], modelPosition [1], modelPosition [2]);
gvrAudioEngine.PlaySound (soundId, true /* looped playback */);
});
UpdateModelPosition ();
CheckGLError ("onSurfaceCreated");
}
public void SetVertices(float[] vertices, int offset, int length)
{
_vertices.Clear();
_vertices.Put(vertices, offset, length);
_vertices.Flip();
}
public void OnSurfaceCreated(IGL10 gl, Javax.Microedition.Khronos.Egl.EGLConfig config)
{
const float coord = 1.0f;
ObjParser model3D = new ObjParser();
List <byte[]> test1 = model3D.ParsedObject(context, "buggy");
float[] vertexArray = new float[test1[0].Length / 4];
System.Buffer.BlockCopy(test1[0], 0, vertexArray, 0, (int)test1[0].Length);
modelVerticesData = vertexArray;
FloatBuffer mTriangleVertices = ByteBuffer.AllocateDirect(modelVerticesData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleVertices.Put(modelVerticesData).Flip();
// Cube colors
// R, G, B, A
float[] modelColorsData =
{
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 0.5f,
0.0f, 0.5f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f
};
FloatBuffer mTriangleColors = ByteBuffer.AllocateDirect(modelColorsData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleColors.Put(modelColorsData).Flip();
float[] textureUVMapArray = new float[test1[1].Length / 4];
System.Buffer.BlockCopy(test1[1], 0, textureUVMapArray, 0, (int)test1[1].Length);
modelTextureUVMapData = textureUVMapArray;
FloatBuffer mTriangleTextureUVMap = ByteBuffer.AllocateDirect(modelTextureUVMapData.Length * mBytesPerFloat).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
mTriangleTextureUVMap.Put(modelTextureUVMapData).Flip();
//Data buffers to VBO
GLES20.GlGenBuffers(3, VBOBuffers, 0); //2 buffers for vertices, texture and colors
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[0]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleVertices.Capacity() * mBytesPerFloat, mTriangleVertices, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[1]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleColors.Capacity() * mBytesPerFloat, mTriangleColors, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, VBOBuffers[2]);
GLES20.GlBufferData(GLES20.GlArrayBuffer, mTriangleTextureUVMap.Capacity() * mBytesPerFloat, mTriangleTextureUVMap, GLES20.GlStaticDraw);
GLES20.GlBindBuffer(GLES20.GlArrayBuffer, 0);
//Load and setup texture
GLES20.GlGenTextures(1, textureHandle, 0); //init 1 texture storage handle
if (textureHandle[0] != 0)
{
//Android.Graphics cose class Matrix exists at both Android.Graphics and Android.OpenGL and this is only sample of using
Android.Graphics.BitmapFactory.Options options = new Android.Graphics.BitmapFactory.Options();
options.InScaled = false; // No pre-scaling
Android.Graphics.Bitmap bitmap = Android.Graphics.BitmapFactory.DecodeResource(context.Resources, Resource.Drawable.iam, options);
GLES20.GlBindTexture(GLES20.GlTexture2d, textureHandle[0]);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMinFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureMagFilter, GLES20.GlNearest);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapS, GLES20.GlClampToEdge);
GLES20.GlTexParameteri(GLES20.GlTexture2d, GLES20.GlTextureWrapT, GLES20.GlClampToEdge);
GLUtils.TexImage2D(GLES20.GlTexture2d, 0, bitmap, 0);
bitmap.Recycle();
}
//Ask android to run RAM garbage cleaner
System.GC.Collect();
//Setup OpenGL ES
GLES20.GlClearColor(coord, coord, coord, coord);
// GLES20.GlEnable(GLES20.GlDepthTest); //uncoment if needs enabled dpeth test
GLES20.GlEnable(2884); // GlCullFace == 2884 see OpenGL documentation to this constant value
GLES20.GlCullFace(GLES20.GlBack);
// Position the eye behind the origin.
float eyeX = 0.0f;
float eyeY = 0.0f;
float eyeZ = 4.5f;
// We are looking toward the distance
float lookX = 0.0f;
float lookY = 0.0f;
float lookZ = -5.0f;
// Set our up vector. This is where our head would be pointing were we holding the camera.
float upX = 0.0f;
float upY = coord;
float upZ = 0.0f;
// Set the view matrix. This matrix can be said to represent the camera position.
// NOTE: In OpenGL 1, a ModelView matrix is used, which is a combination of a model and
// view matrix. In OpenGL 2, we can keep track of these matrices separately if we choose.
Matrix.SetLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);
string vertexShader =
"uniform mat4 u_MVPMatrix; \n" // A constant representing the combined model/view/projection matrix.
+ "attribute vec4 a_Position; \n" // Per-vertex position information we will pass in.
+ "attribute vec4 a_Color; \n" // Per-vertex color information we will pass in.
+ "varying vec4 v_Color; \n" // This will be passed into the fragment shader.
+ "attribute vec2 a_TextureCoord; \n"
+ "varying vec2 v_TextureCoord; \n"
+ "void main() \n" // The entry point for our vertex shader.
+ "{ \n"
+ " v_TextureCoord = a_TextureCoord; \n" // Pass the color through to the fragment shader. It will be interpolated across the triangle.
+ " v_Color = a_Color; \n" // Pass the color through to the fragment shader. It will be interpolated across the triangle.
+ " gl_Position = u_MVPMatrix \n" // gl_Position is a special variable used to store the final position.
+ " * a_Position; \n" // Multiply the vertex by the matrix to get the final point in normalized screen coordinates.
+ "} \n";
string fragmentShader =
"precision mediump float; \n" // Set the default precision to medium. We don't need as high of a
// precision in the fragment shader.
+ "varying vec4 v_Color; \n" // This is the color from the vertex shader interpolated across the triangle per fragment.
+ "varying vec2 v_TextureCoord; \n"
+ "uniform sampler2D u_Texture; \n"
+ "void main() \n" // The entry point for our fragment shader.
+ "{ \n"
+ " gl_FragColor = texture2D(u_Texture, v_TextureCoord); \n" // Pass the color directly through the pipeline.
+ "} \n";
vertexShader = string.Empty;
fragmentShader = string.Empty;
int resourceId = context.Resources.GetIdentifier("vertexshadervladimir1", "raw", context.PackageName);
Stream fileStream = context.Resources.OpenRawResource(resourceId);
StreamReader streamReader = new StreamReader(fileStream);
string line = string.Empty;
while ((line = streamReader.ReadLine()) != null)
{
vertexShader += line + "\n";
}
resourceId = context.Resources.GetIdentifier("fragmentshadervladimir1", "raw", context.PackageName);
fileStream = context.Resources.OpenRawResource(resourceId);
streamReader = new StreamReader(fileStream);
while ((line = streamReader.ReadLine()) != null)
{
fragmentShader += line + "\n";
}
int vertexShaderHandle = GLES20.GlCreateShader(GLES20.GlVertexShader);
if (vertexShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(vertexShaderHandle, vertexShader);
// Compile the shader.
GLES20.GlCompileShader(vertexShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(vertexShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(vertexShaderHandle);
vertexShaderHandle = 0;
}
}
if (vertexShaderHandle == 0)
{
throw new Exception("Error creating vertex shader.");
}
// Load in the fragment shader shader.
int fragmentShaderHandle = GLES20.GlCreateShader(GLES20.GlFragmentShader);
if (fragmentShaderHandle != 0)
{
// Pass in the shader source.
GLES20.GlShaderSource(fragmentShaderHandle, fragmentShader);
// Compile the shader.
GLES20.GlCompileShader(fragmentShaderHandle);
// Get the compilation status.
int[] compileStatus = new int[1];
GLES20.GlGetShaderiv(fragmentShaderHandle, GLES20.GlCompileStatus, compileStatus, 0);
// If the compilation failed, delete the shader.
if (compileStatus[0] == 0)
{
GLES20.GlDeleteShader(fragmentShaderHandle);
fragmentShaderHandle = 0;
}
}
if (fragmentShaderHandle == 0)
{
throw new Exception("Error creating fragment shader.");
}
// Create a program object and store the handle to it.
int programHandle = GLES20.GlCreateProgram();
if (programHandle != 0)
{
// Bind the vertex shader to the program.
GLES20.GlAttachShader(programHandle, vertexShaderHandle);
// Bind the fragment shader to the program.
GLES20.GlAttachShader(programHandle, fragmentShaderHandle);
// Bind attributes
GLES20.GlBindAttribLocation(programHandle, 0, "a_Position");
GLES20.GlBindAttribLocation(programHandle, 1, "a_Color");
GLES20.GlBindAttribLocation(programHandle, 2, "a_TextureCoord");
// Link the two shaders together into a program.
GLES20.GlLinkProgram(programHandle);
// Get the link status.
int[] linkStatus = new int[1];
GLES20.GlGetProgramiv(programHandle, GLES20.GlLinkStatus, linkStatus, 0);
// If the link failed, delete the program.
if (linkStatus[0] == 0)
{
GLES20.GlDeleteProgram(programHandle);
programHandle = 0;
}
}
if (programHandle == 0)
{
throw new Exception("Error creating program.");
}
// Set program handles. These will later be used to pass in values to the program.
mMVPMatrixHandle = GLES20.GlGetUniformLocation(programHandle, "u_MVPMatrix");
mPositionHandle = GLES20.GlGetAttribLocation(programHandle, "a_Position");
mColorHandle = GLES20.GlGetAttribLocation(programHandle, "a_Color");
mTextureCoordHandle = GLES20.GlGetAttribLocation(programHandle, "a_TextureCoord");
mTextureHandle = GLES20.GlGetUniformLocation(programHandle, "u_Texture");
// Tell OpenGL to use this program when rendering.
GLES20.GlUseProgram(programHandle);
}
public DistortionMesh(EyeParams eye, Distortion distortion, float screenWidthM, float screenHeightM, float xEyeOffsetMScreen, float yEyeOffsetMScreen, float textureWidthM, float textureHeightM, float xEyeOffsetMTexture, float yEyeOffsetMTexture, float viewportXMTexture, float viewportYMTexture, float viewportWidthMTexture, float viewportHeightMTexture)
{
float mPerUScreen = screenWidthM;
float mPerVScreen = screenHeightM;
float mPerUTexture = textureWidthM;
float mPerVTexture = textureHeightM;
float[] vertexData = new float[8000];
int vertexOffset = 0;
for (int row = 0; row < 40; row++)
{
for (int col = 0; col < 40; col++)
{
float uTexture = col / 39.0F * (viewportWidthMTexture / textureWidthM) + viewportXMTexture / textureWidthM;
float vTexture = row / 39.0F * (viewportHeightMTexture / textureHeightM) + viewportYMTexture / textureHeightM;
float xTexture = uTexture * mPerUTexture;
float yTexture = vTexture * mPerVTexture;
float xTextureEye = xTexture - xEyeOffsetMTexture;
float yTextureEye = yTexture - yEyeOffsetMTexture;
float rTexture = (float)Math.Sqrt(xTextureEye * xTextureEye + yTextureEye * yTextureEye);
float textureToScreen = rTexture > 0.0F ? distortion.distortInverse(rTexture) / rTexture : 1.0F;
float xScreen = xTextureEye * textureToScreen + xEyeOffsetMScreen;
float yScreen = yTextureEye * textureToScreen + yEyeOffsetMScreen;
float uScreen = xScreen / mPerUScreen;
float vScreen = yScreen / mPerVScreen;
float vignetteSizeMTexture = 0.002F / textureToScreen;
float dxTexture = xTexture - DistortionRenderer.clamp(xTexture, viewportXMTexture + vignetteSizeMTexture, viewportXMTexture + viewportWidthMTexture - vignetteSizeMTexture);
float dyTexture = yTexture - DistortionRenderer.clamp(yTexture, viewportYMTexture + vignetteSizeMTexture, viewportYMTexture + viewportHeightMTexture - vignetteSizeMTexture);
float drTexture = (float)Math.Sqrt(dxTexture * dxTexture + dyTexture * dyTexture);
float vignette = 1.0F - DistortionRenderer.clamp(drTexture / vignetteSizeMTexture, 0.0F, 1.0F);
vertexData[(vertexOffset + 0)] = (2.0F * uScreen - 1.0F);
vertexData[(vertexOffset + 1)] = (2.0F * vScreen - 1.0F);
vertexData[(vertexOffset + 2)] = vignette;
vertexData[(vertexOffset + 3)] = uTexture;
vertexData[(vertexOffset + 4)] = vTexture;
vertexOffset += 5;
}
}
nIndices = 3158;
int[] indexData = new int[nIndices];
int indexOffset = 0;
vertexOffset = 0;
for (int row = 0; row < 39; row++)
{
if (row > 0)
{
indexData[indexOffset] = indexData[(indexOffset - 1)];
indexOffset++;
}
for (int col = 0; col < 40; col++)
{
if (col > 0)
{
if (row % 2 == 0)
{
vertexOffset++;
}
else
{
vertexOffset--;
}
}
indexData[(indexOffset++)] = vertexOffset;
indexData[(indexOffset++)] = (vertexOffset + 40);
}
vertexOffset += 40;
}
FloatBuffer vertexBuffer = ByteBuffer.AllocateDirect(vertexData.Length * 4).Order(ByteOrder.NativeOrder()).AsFloatBuffer();
vertexBuffer.Put(vertexData).Position(0);
IntBuffer indexBuffer = ByteBuffer.AllocateDirect(indexData.Length * 4).Order(ByteOrder.NativeOrder()).AsIntBuffer();
indexBuffer.Put(indexData).Position(0);
int[] bufferIds = new int[2];
GLES20.GlGenBuffers(2, bufferIds, 0);
mArrayBufferId = bufferIds[0];
mElementBufferId = bufferIds[1];
GLES20.GlBindBuffer(34962, mArrayBufferId);
GLES20.GlBufferData(34962, vertexData.Length * 4, vertexBuffer, 35044);
GLES20.GlBindBuffer(34963, mElementBufferId);
GLES20.GlBufferData(34963, indexData.Length * 4, indexBuffer, 35044);
GLES20.GlBindBuffer(34962, 0);
GLES20.GlBindBuffer(34963, 0);
}
protected internal virtual void UpdateVertices()
{
_Width = 0;
_Height = 0;
if (text == null)
{
text = "";
}
Quads = Quad.CreateSet(text.Length);
RealLength = 0;
var length = text.Length;
for (var i = 0; i < length; i++)
{
var rect = ((TextureFilm)font).Get(text[i]);
var w = font.Width(rect);
var h = font.Height(rect);
Vertices[0] = Width;
Vertices[1] = 0;
Vertices[2] = rect.Left;
Vertices[3] = rect.Top;
Vertices[4] = Width + w;
Vertices[5] = 0;
Vertices[6] = rect.Right;
Vertices[7] = rect.Top;
Vertices[8] = Width + w;
Vertices[9] = h;
Vertices[10] = rect.Right;
Vertices[11] = rect.Bottom;
Vertices[12] = Width;
Vertices[13] = h;
Vertices[14] = rect.Left;
Vertices[15] = rect.Bottom;
Quads.Put(Vertices);
RealLength++;
_Width += w + font.tracking;
if (h > Height)
{
_Height = h;
}
}
if (length > 0)
{
_Width -= font.tracking;
}
Dirty = false;
}
public bool loadingBinModel(String fileName)
{
float[] floatArray;
long size;
try
{
// Vertex
vertexBuffer = null;
System.GC.Collect();
int resourceId = context.Resources.GetIdentifier(fileName + "_vert", "raw", context.PackageName);
Stream fileIn = context.Resources.OpenRawResource(resourceId) as Stream;
MemoryStream m = new MemoryStream();
fileIn.CopyTo(m);
size = m.Length;
floatArray = new float[size / 4];
System.Buffer.BlockCopy(m.ToArray(), 0, floatArray, 0, (int)size);
vertexBuffer = FloatBuffer.Allocate((int)size / 4); // float array to
vertexBuffer.Put(floatArray, 0, (int)size / 4);
vertexBuffer.Flip();
VBOManager.setSize(fileName, vertexBuffer.Capacity() / 4); //is size of vertex count = 1 vertex 4 float x,y,z, 1
floatArray = null;
fileIn.Close();
m.Close();
//----------------------------------------------------------------------------------------------------
normalBuffer = null;
System.GC.Collect();
resourceId = context.Resources.GetIdentifier(fileName + "_norm", "raw", context.PackageName);
fileIn = context.Resources.OpenRawResource(resourceId) as Stream;
m = new MemoryStream();
fileIn.CopyTo(m);
size = m.Length;
floatArray = new float[size / 4];
System.Buffer.BlockCopy(m.ToArray(), 0, floatArray, 0, (int)size);
normalBuffer = FloatBuffer.Allocate((int)size / 4); // float array to
normalBuffer.Put(floatArray, 0, (int)size / 4);
normalBuffer.Flip();
floatArray = null;
fileIn.Close();
m.Close();
//----------------------------------------------------------------------------------------------------
textureBuffer = null;
System.GC.Collect();
resourceId = context.Resources.GetIdentifier(fileName + "_texture", "raw", context.PackageName);
fileIn = context.Resources.OpenRawResource(resourceId) as Stream;
m = new MemoryStream();
fileIn.CopyTo(m);
size = m.Length;
floatArray = new float[size / 4];
System.Buffer.BlockCopy(m.ToArray(), 0, floatArray, 0, (int)size);
textureBuffer = FloatBuffer.Allocate((int)size / 4); // float array to
textureBuffer.Put(floatArray, 0, (int)size / 4);
textureBuffer.Flip();
floatArray = null;
fileIn.Close();
m.Close();
return(true);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return(false);
}
}